PIC18F27J53-I/SP - 8-bit 48MHz USB MCU, 128KB Flash, 28-SPDIP | Microchip
MPN: PIC18F27J53-I/SP ✓ Hoạt độngPIC18F27J53-I/SP Tóm tắt
What is a microcontroller? A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), data memory (RAM), and programmable peripherals on one die. The PIC18F27J53 sits in the PIC18 8-bit family hierarchy as: PIC18F27J53 -> PIC18 J-series -> PIC18 family -> 8-bit PIC microcontroller -> Microchip MCU portfolio -> embedded controller IC. Its XLP technology (eXtreme Low Power) provides deep-sleep currents in the nanoamp range, targeting battery-powered and USB-powered embedded designs.
Key features include 12 MIPS peak performance at 48 MHz, 22 channels of 10/12-bit ADC, two analog comparators, hardware DMA moving data between peripherals without CPU intervention, full-speed USB 2.0 device/host/OTG, four 16-bit timers, two MSSP (SPI/I2C), two UART modules, and a CTMU charge-time measurement unit for capacitive touch. The 28-SPDIP package offers through-hole ease-of-use for prototyping and breadboarding while still exposing the full peripheral set.
Architecturally, the PIC18F27J53 uses a Harvard RISC core with a hardware multiplier, 16-bit instructions, and dedicated peripheral DMA channels that allow ADC captures, PWM updates, and USB transfers to run independently of the CPU. This offloading enables deterministic real-time performance and frees the core for application logic in motor control, sensor fusion, or USB HID applications.
Typical applications include USB peripherals such as HID mice/keyboards, CDC virtual COM ports, and audio class devices; industrial sensor nodes using CTMU-based capacitive touch; battery-powered data loggers exploiting nanoWatt XLP sleep currents; small motor control subsystems leveraging PWM and timers; and consumer devices requiring mixed-signal integration with USB connectivity.
When designing with this part, ensure the USB D+/D- lines are routed as a 90-ohm differential pair with the required 15 kohm pull-down on D- in device mode. The wide operating voltage (2.0V-3.6V core / 4.2V-5.5V USB-capable) requires careful LDO selection when powering USB rails.
This page consolidates distributor pricing, verified drop-in alternatives, and practical design notes not found on the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC18F27J53-I/SP — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC18F27J53-I/SP (cùng hình factor và footprint) — khác nhau ở ADC, Operating Temperature, Package, Series, MSL Level.
PIC18F27J53-I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F27J53-I/SS
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F27J53-I/ML
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F26J53-I/SP
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F27J13-I/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F46J53-I/SP
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F27J53-I/SP Tỷ lệ tối đa & tính chất điện
| Core Processor | PIC18 (8-bit) |
| Core Size | 8-Bit |
| Series | PIC XLP 18J |
| Maximum Clock Speed | 48 MHz |
| Performance | 12 MIPS |
| Program Memory Size | 128 KB (64K x 16) Flash |
| RAM Size | 4 KB |
| Hộp | 28-SPDIP (0.300", 7.62 mm) |
| Kiểu lắp đặt | Through Hole |
| I/O Count | 25 |
| Connectivity | I2C, LINbus, SPI, UART/USART, USB |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT, DMA, CTMU |
| ADC | 12-bit, up to 22 channels |
| Điện áp cung cấp | 2.0 V to 3.6 V (core); 4.2 V to 5.5 V USB-capable |
| Nhiệt độ hoạt động | -40C to +85C (Industrial) |
| USB | USB 2.0 Full-Speed Device/Host/OTG |
| Cấp MSL | 1 (unlimited) |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC18F27J53-I/SP
| Chân 1 | RA0/AN0 — Port A bit 0 / Analog input 0 |
| Chân 2 | RA1/AN1 — Port A bit 1 / Analog input 1 |
| Chân 3 | RA2/AN2/VREF- — Port A bit 2 / Analog input 2 / ADC VREF- |
| Chân 4 | RA3/AN3/VREF+ — Port A bit 3 / Analog input 3 / ADC VREF+ |
| Chân 5 | RA4/AN4 — Port A bit 4 / Analog input 4 |
| Chân 6 | RA5/AN5 — Port A bit 5 / Analog input 5 |
| Chân 7 | VDD — Positive supply (2.0-3.6V core / 4.2-5.5V USB) |
| Chân 8 | VSS — Ground reference |
| Chân 9 | OSC1/CLKIN — Crystal oscillator input / external clock input |
| Chân 10 | OSC2/CLKOUT — Crystal oscillator output / clock output |
| Chân 11 | RC0/SOSCO — Port C bit 0 / Secondary oscillator output |
| Chân 12 | RC1/SOSCI — Port C bit 1 / Secondary oscillator input |
| Chân 13 | RC2/CCP1 — Port C bit 2 / Capture/Compare/PWM 1 |
| Chân 14 | RC3/CCP2 — Port C bit 3 / Capture/Compare/PWM 2 |
| Chân 15 | RC4/D-/VMIO — Port C bit 4 / USB D- line / Vbus monitor input |
| Chân 16 | RC5/D+/VPIO — Port C bit 5 / USB D+ line / Vbus power input |
| Chân 17 | RC6 — Port C bit 6 |
| Chân 18 | RC7 — Port C bit 7 |
| Chân 19 | VSS — Ground reference |
| Chân 20 | VDD — Positive supply |
| Chân 21 | RB0/AN12 — Port B bit 0 / Analog input 12 |
| Chân 22 | RB1/AN10 — Port B bit 1 / Analog input 10 |
| Chân 23 | RB2/AN8 — Port B bit 2 / Analog input 8 |
| Chân 24 | RB3/AN9 — Port B bit 3 / Analog input 9 |
| Chân 25 | RB4/CCP4 — Port B bit 4 / Capture/Compare/PWM 4 |
| Chân 26 | RB5/CCP5 — Port B bit 5 / Capture/Compare/PWM 5 |
| Chân 27 | RB6/PGC — Port B bit 6 / ICSP clock |
| Chân 28 | RB7/PGD — Port B bit 7 / ICSP data |
Ứng dụng tiêu biểu
PIC18F27J53-I/SP phù hợp cho 7 Áp dụngs: USB HID Peripherals (Mice, Keyboards, Custom HID), USB CDC Virtual COM Port Devices, Capacitive Touch Sensing (CTMU-based Keypads), Battery-Powered Data Loggers with USB, Small Motor Control (PWM + ADC Feedback), Industrial Sensor Front-Ends (LIN/Analog), Consumer Audio Class USB Devices.
USB HID Peripherals (Mice, Keyboards, Custom HID)
The PIC18F27J53's integrated USB 2.0 full-speed SIE and 128 KB Flash make it an excellent fit for USB HID devices such as mice, keyboards, game controllers, and custom HID-class peripherals. The hardware DMA channels move HID report data directly between endpoint buffers and RAM, freeing the 12 MIPS core for button matrix scanning and report formatting. With 4 KB RAM, the device can sustain high HID report rates while maintaining descriptor handling. Designers benefit from Microchip's free USB stack and HID bootloader, which leverage the ICSP self-programming Flash for firmware updates over USB.
Được đề xuất
USB CDC Virtual COM Port Devices
The PIC18F27J53-I/SP supports USB Communication Device Class (CDC) implementations that appear as virtual COM ports to a host PC, eliminating the need for external RS-232 transceivers or USB-to-UART bridges. Its two UART peripherals can be tunneled to USB, allowing legacy RS-232 firmware to bridge to USB transparently. The 12 MIPS performance ensures smooth throughput at 115200+ baud virtual COM rates, while the 4 KB RAM supports bulk endpoint buffering. This makes the chip ideal for industrial configuration interfaces, debug ports, and firmware-update tools where legacy serial design patterns remain in use.
Được đề xuất
Capacitive Touch Sensing (CTMU-based Keypads)
The PIC18F27J53's on-chip CTMU (Charge Time Measurement Unit) combined with the 12-bit ADC and 22 analog channels supports capacitive touch sensing for keypads, sliders, and proximity sensors. The CTMU delivers constant current sources that allow the ADC to measure charge-time differences on capacitive electrodes with sub-percent accuracy, all without external analog components. The XLP deep-sleep mode keeps touch scanning consumption in the microamp range, suiting battery-powered white goods, appliances, and IoT user interfaces. Designers benefit from Microchip's mTouch library for the PIC18 platform.
Được đề xuất
Battery-Powered Data Loggers with USB
The PIC18F27J53-I/SP's nanoWatt XLP technology and 128 KB Flash are ideal for battery-powered data loggers that periodically wake up to acquire sensor data, store it in Flash, and dump to a host via USB. Deep-sleep currents in the nanoamp range allow multi-year battery life when acquisition intervals are long, while the integrated USB eliminates external bridges for log retrieval. The 12-bit ADC at 22 channels supports multi-sensor arrays (temperature, voltage, current), and the DMA engine can stream ADC samples directly to RAM without waking the core for high-rate bursts.
Được đề xuất
Small Motor Control (PWM + ADC Feedback)
The PIC18F27J53-I/SP delivers 12 MIPS and four 16-bit timers with hardware PWM, supporting DC brush, stepper, and small BLDC motor control applications. The 12-bit ADC provides current/voltage feedback sensing at up to 200 ksps with hardware DMA, enabling precise torque and speed control loops without CPU bottlenecking. The 25 I/O pins are sufficient for quadrature encoder inputs, Hall sensors, and half-bridge driver enable lines. Designers can use the CTMU as a zero-crossing detector for low-cost sensorless BLDC commutation in fan or pump drives.
Được đề xuất
Industrial Sensor Front-Ends (LIN/Analog)
The PIC18F27J53-I/SP includes LIN-bus connectivity, SPI/I2C MSSP, and a 12-bit ADC, making it suitable for industrial sensor front-ends and LIN slaves. LIN 2.x support, combined with on-chip PWM and timers, enables cost-effective LIN motor and actuator nodes in automotive body electronics and factory automation. The robust industrial temperature range (-40C to +85C) supports outdoor and under-hood sensor placement, while the 128 KB Flash accommodates LIN stack libraries and application firmware in a single chip.
Được đề xuất
Consumer Audio Class USB Devices
The PIC18F27J53's USB Audio Class support and DMA-driven endpoint streaming allow it to implement USB speakers, headsets, and audio control surfaces at low BOM cost. The two MSSP peripherals can drive external I2S DACs, while the 12 MIPS core runs basic audio mixing or sample-rate conversion. With 4 KB RAM and ping-pong endpoint buffering via DMA, the chip sustains stable isochronous USB audio streams. Designers can pair it with low-cost audio DACs to create complete USB audio peripherals without dedicated audio processors.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18F27J53-I/SP — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC18F27J53-I/SO | PIC18F27J53-I/SS | PIC18F26J53-I/SP | PIC18F27J13-I/SS |
|---|---|---|---|---|---|
| Package | 28-SPDIP | 28-SOIC | 28-SSOP | 28-SPDIP (same) | 28-SSOP |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 128 KB | 128 KB (same) | 128 KB (same) | 64 KB (-50%) | 128 KB (same) |
| RAM | 4 KB | 4 KB (same) | 4 KB (same) | 3.6 KB | 4 KB (same) |
| USB 2.0 | Yes (FS Device/Host/OTG) | Yes (same) | Yes (same) | Yes (same) | Yes (same) |
| CTMU (Capacitive Touch) | Yes | Yes (same) | Yes (same) | Yes (same) | No |
| DMA Channels | Yes (8 channels) | Yes (same) | Yes (same) | Yes (same) | No |
| Maximum Clock | 48 MHz | 48 MHz (same) | 48 MHz (same) | 48 MHz (same) | 48 MHz (same) |
| Unit Price (qty 1) | ~$6.12 USD | ~$5.95 USD | ~$5.80 USD | ~$5.40 USD | ~$5.20 USD |
Bảo phân biệt quan trọng
- 128 KB Flash with hardware DMA + CTMU in 28-SPDIP (vsPIC18F27J13-I/SS)
- Same 128 KB Flash as J53 but in 64 KB part (vsPIC18F26J53-I/SP)
- Through-hole SPDIP for breadboard-friendly prototyping (vsPIC18F27J53-I/ML (QFN))
Ghi chú thiết kế
Route the USB D+ and D- lines as a 90-ohm differential pair with controlled impedance on the outer PCB layer, keeping them short and away from switching signals. Place the 15 kohm pull-down resistor on D- (device mode) or D+ (host mode) within 50 mm of the USB connector. Add common-mode chokes if the design must pass radiated emissions testing.
Decouple each VDD/VSS pair with 100 nF ceramic capacitors placed within 3 mm of each pin pair, plus a 10 uF bulk capacitor near the regulator output. When operating USB mode (4.2-5.5V Vbus), the internal 3.3V LDO requires its VDD/VSS pair decoupled as per datasheet recommendation to keep ripple below 50 mV for USB signaling compliance.
Do not assume the ICSP pins RB6/RB7 are 5V tolerant on this part - they require 3.3V signaling from programmers. When migrating firmware from PIC18F2550/4550 designs, the J-series requires PLL configuration changes (48 MHz PLL is on by default with internal clock) and the configuration word bit positions differ; consult the PIC18F27J53 datasheet configuration section before porting.
The 28-SPDIP footprint requires 0.100" (2.54 mm) pin pitch with 0.030" (0.76 mm) drill and standard 0.060" (1.5 mm) pad. For hand-soldered prototypes, use sockets to allow quick firmware iteration. Keep analog traces (RA/RC analog functions) away from digital switching to minimize crosstalk into the ADC measurements.
Thông tin tuân thủ
RoHS compliant per Microchip product page. Industrial temperature grade -40C to +85C. Not AEC-Q100 qualified; for automotive USB applications, consider PIC18F25K50 in AEC-Q100 qualified versions.
